This experimental demonstrator provides a clear, handson way to show that an electric current produces a magnetic field. It is designed for classroom demonstrations, laboratory exercises, and student experiments where direct observation of magnetic effects is required. Key benefits Direct visual proof of magnetic fields around a currentcarrying conductor. The magnetic needle responds when current flows, making the effect easy to observe. Demonstrates the magnetic field of a straightline current and the direction predicted by the righthand rule. Simple setup and operation require only a DC 6V power supply, making it compatible with common classroom power sources. Adjustable base and needle alignment let instructors ensure the wire is parallel to the magnetic needle for consistent, repeatable results. Reversible current direction lets users compare opposite magnetic field directions in a single experiment. Main features and functions Function: Verifies the presence and direction of magnetic fields generated by current through a conductor; suitable for straightline current demonstrations. Compatibility: Designed to work with a DC 6V power supply. Key components: Experimental demonstrator base, needle tip for mounting the large magnetic needle, and wire path that must be aligned parallel to the needle. Performance: When connected to a DC 6V source, the magnetic needle swings to indicate the magnetic field; reversing the current reverses the needle deflection. How to use 1. Place the demonstrator on a flat surface and mount the large magnetic needle on the needle tip. 2. Adjust the base orientation so the magnetic needle is stationary and the wire is parallel to the needle. 3. Connect a DC 6V power supply and observe the needle swing, indicating the generated magnetic field. 4. Reverse the current direction and observe the change in needle direction to reinforce the righthand rule. Practical applications Classroom demonstrations: Make abstract electromagnetic concepts tangible for middle school, school, and introductory college physics lessons. Laboratory experiments: Use as part of structured lab exercises to measure and compare magnetic effects from straightline currents. Science fairs and outreach: Provide a safe, visible demonstration of electromagnetism for public exhibits and student projects. This demonstrator offers a straightforward, reliable way to teach and verify fundamental electromagnetic principles without complex equipment.